causality/.env.example at main · SebastienMelki/causality · GitHub

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# Causality Environment Configuration
# Copy this file to .env and adjust values as needed

# =============================================================================
# Logging Configuration
# =============================================================================
LOG_LEVEL=info                    # debug, info, warn, error
LOG_FORMAT=json                   # json, text

# =============================================================================
# HTTP Gateway Configuration
# =============================================================================
HTTP_ADDR=:8080                   # Listen address for HTTP server
HTTP_READ_TIMEOUT=10s             # Max duration for reading request
HTTP_WRITE_TIMEOUT=30s            # Max duration for writing response
HTTP_IDLE_TIMEOUT=60s             # Max time to wait for next request
HTTP_MAX_HEADER_BYTES=1048576     # Max header size (1MB)
HTTP_SHUTDOWN_TIMEOUT=30s         # Graceful shutdown timeout

# CORS Configuration
CORS_ALLOWED_ORIGINS=*            # Comma-separated allowed origins
CORS_ALLOWED_METHODS=GET,POST,PUT,DELETE,OPTIONS
CORS_ALLOWED_HEADERS=Accept,Authorization,Content-Type,X-Request-ID,X-Correlation-ID
CORS_EXPOSED_HEADERS=X-Request-ID
CORS_ALLOW_CREDENTIALS=false
CORS_MAX_AGE=86400                # Preflight cache max age (seconds)

# Rate Limiting
RATE_LIMIT_ENABLED=true
RATE_LIMIT_REQUESTS_PER_SECOND=1000
RATE_LIMIT_BURST_SIZE=2000

# =============================================================================
# NATS Configuration
# =============================================================================
NATS_URL=nats://localhost:4222   # NATS server URL
NATS_CLIENT_NAME=causality-server # Client name for monitoring
NATS_MAX_RECONNECTS=60           # Max reconnection attempts
NATS_RECONNECT_WAIT=2s           # Time between reconnection attempts
NATS_TIMEOUT=5s                  # Connection timeout

# Stream Configuration
NATS_STREAM_NAME=CAUSALITY_EVENTS
NATS_STREAM_SUBJECTS=events.>,requests.>,responses.>,anomalies.>
NATS_STREAM_MAX_AGE=168h         # 7 days
NATS_STREAM_MAX_BYTES=107374182400  # 100GB
NATS_STREAM_REPLICAS=1
NATS_STREAM_STORAGE=file         # file or memory

# =============================================================================
# Warehouse Sink Configuration (S3/MinIO)
# =============================================================================
S3_ENDPOINT=http://localhost:9000  # S3/MinIO endpoint
S3_REGION=us-east-1                # AWS region
S3_BUCKET=causality-events         # Bucket name
S3_ACCESS_KEY_ID=minioadmin        # Access key
S3_SECRET_ACCESS_KEY=minioadmin    # Secret key
S3_USE_PATH_STYLE=true             # Use path-style (required for MinIO)
S3_PREFIX=events                   # Key prefix for all objects

# Batching Configuration
BATCH_MAX_EVENTS=10000             # Max events per batch
BATCH_FLUSH_INTERVAL=5m            # Max time before flush
BATCH_MAX_CONCURRENT_WRITES=4      # Max concurrent S3 uploads

# Parquet Configuration
PARQUET_COMPRESSION=snappy         # snappy, gzip, zstd, none
PARQUET_ROW_GROUP_SIZE=10000       # Rows per row group

# =============================================================================
# Consumer Configuration (warehouse-sink only)
# =============================================================================
CONSUMER_NAME=warehouse-sink       # NATS consumer durable name